Herbie Murray
Waking up with a numb arm is a common experience, with about a third of adults reporting numbness or tingling in their arms, wrists, or hands at least once a week. This phenomenon is known as nocturnal paresthesia and is often caused by nerve compression or poor positioning during sleep, which prevents correct blood flow to the nerves. While this feeling usually goes away quickly, if it persists, it may indicate an underlying medical issue such as carpal tunnel syndrome or peripheral neuropathy. Therefore, it is important to pay attention to your body's signals and consult a doctor if symptoms persist or interfere with sleep.
| Characteristics | Values |
|---|---|
| Sensation | Numbness, "pins and needles", crawling skin, or a burning sensation |
| Medical term | Paresthesia |
| Cause | Sleeping posture, nerve damage, nerve compression, vitamin B deficiency, carpal tunnel syndrome, peripheral neuropathy, diabetes, autoimmune disorders, alcohol use disorder, medication side effects, poor circulation, injuries to the neck, shoulder, arm or hand, cervical spondylosis, hereditary neuropathy with liability to pressure palsies (HNPP) |
| Prevention | Learning new sleeping positions, wearing a wrist brace or splint, stretching and massaging before bed, using ice and heat therapy, avoiding sleeping with arms overhead or tucked under the body, gently moving hands and fingers, running warm water over hands |
| Treatment | Regular exercise, supplements, diet changes, medication, physical therapy, surgery |
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What You'll Learn
- The sensation is called paresthesia, or pins and needles
- It is caused by nerve compression, or restricted blood flow
- Sleep positioning can cause stress to the nerves in your neck or arm
- Paresthesia may be a sign of an underlying medical issue
- To prevent paresthesia, sleep on your back with your arms at your sides
The sensation is called paresthesia, or pins and needles
The sensation of a limb falling asleep is called paresthesia, or pins and needles. It is usually a harmless and temporary response to pressure on a nerve or blood vessel. This pressure can be caused by sleeping on top of your arm, sleeping with your arm under your head, or curling your elbow or wrist under your body or pillow. The radial nerve straightens out the arm and lifts your wrist and fingers, while the ulnar nerve spreads your fingers. When these nerves are compressed, the information that flows from your extremities back to your brain is temporarily disrupted.
Paresthesia can also be caused by nerve damage due to conditions such as diabetes, arthritis, vitamin deficiencies, or hypothyroidism. In these cases, paresthesia can be a symptom of a more serious condition and may require medical attention. For example, carpal tunnel syndrome is a form of nerve compression that can cause paresthesia. It occurs when tendons in the wrist become inflamed and press on the median nerve, leading to numbness, tingling, or weakness in the hand. Peripheral neuropathy is another condition that affects the nerves outside of the brain and spinal cord, and it can also result in paresthesia.
To prevent paresthesia in the arms, it is recommended to sleep in a position that minimizes pressure on the nerves. Sleeping on your back (supine) is considered the best option, while stomach sleeping (prone) is generally the worst for paresthesia. Using a wrist brace or splint can also help to keep the wrist in a neutral position and prevent bending. Additionally, stretching and massaging the wrists and hands before bed can improve circulation and reduce tension.
While paresthesia is usually harmless and temporary, it can sometimes be a sign of a more serious medical condition. If paresthesia is frequent or persistent, it is recommended to consult a healthcare professional to determine the underlying cause and appropriate treatment.
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It is caused by nerve compression, or restricted blood flow
Nerve compression or restricted blood flow can cause a person's arm to "fall asleep" while they sleep. This is a phenomenon known as paresthesia, which can be described as a feeling of pins and needles, numbness, or a crawling sensation on the skin. While the sensation can be uncomfortable, it is usually painless and temporary.
Paresthesia is often caused by sleeping in a position that puts pressure on the nerves in the arm. For example, sleeping with the arm under the head, body, or pillow can cause nerve compression. Sleeping with the wrist or elbow bent or curled inward for extended periods can also put pressure on the nerves. The ulnar nerve, which controls sensation in the small and ring fingers, wraps around the inside of the elbow, and flexing the elbow for too long can cause it to be strained.
Certain medical conditions can also increase the likelihood of nerve compression. For instance, people with hereditary neuropathy with liability to pressure palsies (HNPP) are more susceptible to nerve compression injuries and may need to be careful about their sleeping positions. Carpal tunnel syndrome is another type of nerve compression that can cause numbness, tingling, or weakness in the hands, especially at night. It occurs when tendons in the wrist become inflamed and press on the median nerve.
In addition to nerve compression, restricted blood flow can also cause paresthesia. Poor circulation can occur when a person stays in one position for too long, such as sleeping on their arm, or due to underlying conditions like diabetes or heart disease. Chronic alcohol use can also damage peripheral nerves, leading to a condition called alcoholic neuropathy, which can cause numbness, tingling, burning sensations, or weakness in the hands and feet.
To prevent paresthesia caused by nerve compression or restricted blood flow, it is important to avoid sleeping with the arm under the head or body and to maintain a neutral wrist and elbow position during sleep. Sleeping on the back with the arms at the sides or on pillows can help keep the elbows and wrists in an ideal position. Using a wrist brace or splint can also help keep the wrist in a neutral position and prevent bending during sleep, reducing pressure on the nerves.
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Sleep positioning can cause stress to the nerves in your neck or arm
Paresthesia can be caused by various factors, including nerve compression, nerve damage, or problems with the nervous system. Certain sleeping positions can put pressure on the nerves in the hand, wrist, arm, or elbow, leading to numbness and tingling. For example, sleeping with your arm under your head, body, or pillow can cause nerve compression. Sleeping with your wrist or elbow bent or curled inward for long periods can also put pressure on the nerves.
To prevent paresthesia, it is recommended to avoid sleeping on your arm and to sleep on your back or side instead. This helps to keep pressure off your nerves. Sleeping with a straight wrist and flat hand can also help reduce nerve compression. Additionally, using a wrist brace or splint, stretching and massaging before bed, and checking your pillow for proper support can help prevent paresthesia.
While paresthesia is typically not a cause for concern, persistent or severe symptoms may indicate underlying issues. It is important to seek medical attention if you experience frequent or prolonged episodes of paresthesia, especially if accompanied by other symptoms. Vitamin B deficiencies, diabetes, autoimmune disorders, alcohol use disorder, and side effects from medications can also cause paresthesia.
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Paresthesia may be a sign of an underlying medical issue
Paresthesia, the medical term for the sensation of "pins and needles", can be caused by sleeping on your arm. This occurs when nerves are compressed or squashed, disrupting the information flow from your arm to your brain. While this is usually harmless and temporary, in some cases, paresthesia can be a sign of an underlying medical issue.
Paresthesia can be transient (temporary) or persistent (chronic). Transient paresthesia is very common and usually harmless. It occurs when body positioning puts pressure on a nerve or limits blood flow. This can happen when sleeping on your arm, with your arm under your head, body, or pillow, or with your wrist or elbow bent or curled inward for too long. Poor circulation can also occur due to conditions like diabetes and heart disease.
However, if paresthesia persists or regularly recurs, it may signal a more serious health condition. Persistent paresthesia can be caused by a lack of circulation or nerve damage, which can indicate more serious nerve injuries or conditions. Conditions such as carpal tunnel syndrome, cubital tunnel syndrome, peripheral neuropathy, multiple sclerosis, and fibromyalgia can cause persistent paresthesia. Certain medications, such as ibuprofen, naproxen sodium, steroid injections, pregabalin, and duloxetine, can also lead to paresthesia. Additionally, infections, hormonal or metabolic conditions, and immune system disorders can affect nerves and cause paresthesia.
If you experience persistent or frequent paresthesia, it is important to seek medical attention to determine the underlying cause. A healthcare professional may recommend treatments such as medication, rest, or surgery, depending on the specific cause.
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To prevent paresthesia, sleep on your back with your arms at your sides
Sleeping on your stomach or with your arms overhead is more likely to cause paresthesia. This is because these positions can compress nerves in the hand, wrist, arm, or elbow, producing numbness and tingling. Paresthesia can also be caused by vitamin B deficiencies, diabetes, or other underlying medical conditions. If you experience persistent or severe arm numbness, it is important to contact a doctor to rule out any other causes.
To prevent paresthesia, in addition to sleeping on your back with your arms at your sides, you can also try wearing a wrist brace or splint to keep your wrists in a neutral position and prevent bending. Stretching and massaging your wrists and hands before bed can also improve circulation and reduce tension. Choosing a mattress and pillow that support spinal alignment and relieve pressure points can also help to prevent paresthesia.
If you are experiencing paresthesia due to an underlying medical condition, medication or physical therapy may be recommended by your healthcare provider. Anti-inflammatory drugs or nerve-pain medications can help to reduce symptoms, and steroid injections can reduce inflammation and relieve pressure on nerves. In some cases, such as with carpal tunnel syndrome, learning new sleeping positions and wearing a wrist splint can also help to improve numbness.
Overall, sleeping on your back with your arms at your sides is a simple way to prevent paresthesia and improve your sleep quality. Combining this with other preventative measures, such as wearing a wrist brace or choosing a supportive mattress, can further help to reduce the occurrence of paresthesia.
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Frequently asked questions
Your arm may temporarily become paralysed, and you may experience a pins and needles sensation known as paresthesia. This is usually caused by nerve compression, which can lead to nerve damage if the pressure is not relieved.
If you experience paresthesia, you should reposition yourself to relieve the pressure on the nerve. You can also try over-the-counter pain medication or a cold compress to alleviate any pain or discomfort.
Sleeping on your arm can put pressure on the nerves and restrict blood flow, leading to chronic circulatory problems and nerve damage. Certain sleeping positions, such as sleeping with your arms overhead or tucked under your body, can increase the risk of nerve compression and associated complications.
To prevent paresthesia, it is recommended to sleep on your back with your arms at your sides or on pillows to keep your elbows and wrists in a neutral position. Side sleeping is also recommended, with a pillow placed in front of you to support your arm and keep your wrist and fingers flat.
If you experience frequent or persistent paresthesia, it is important to consult a doctor as it may indicate an underlying medical condition such as carpal tunnel syndrome, vitamin B deficiency, or peripheral neuropathy. Chronic paresthesia can be a sign of more serious health issues and requires prompt medical attention.
